Those with emotional-support animals will have to sign a statement vouching that their animal can behave, fill out a veterinarian health form, and a mental health form.

“I feel there should be proper documentation to prove an animal is a therapy dog," said Tampa International Airport traveler Laura Kelly. "It’s too easy to buy a jacket online and say it's a therapy dog.”

Delta says the new measures will support its top priority of customer safety, while supporting the rights of those with legitimate needs.